get_video_id(url)

Given Youtube video URL, returns video id

Parameter :

• url : A youtube video watch URL as string. Supported URL format example :
  • https://www.youtube.com/watch?...
  • https://m.youtube.com/watch?...
  • https://youtu.be/...
  • https://www.youtube.com/embed/...
  • https://www.youtube-nocookie.com/embed/...

Returns :

• A string containing video id, or
• null

get_channel_id(url, offline, print_error)

Given Youtube channel, video or user URL, returns channel id

Parameters :

• url : A youtube video watch, channel or user URL as string. Supported URL format example :
  • https://www.youtube.com/channel/...
  • https://www.youtube.com/user/...
  • https://www.youtube.com/watch?...
  • https://m.youtube.com/watch?...
  • https://youtu.be/...
  • https://www.youtube.com/embed/...
  • https://www.youtube-nocookie.com/embed/...
• offline : An optional boolean argument to indicate whether or not to make HTTP request to get channel ID.
  • Default is false, which makes a single HTTP request to https://www.youtube.com/watch?... or https://www.youtube.com/user/... URL.
  • Setting it to true would return null to all URL other than those formatted like this https://www.youtube.com/channel/...
• print_error : An optional boolean argument to indicate whether or not to print any possible error message to console. Only useful for debugging. Default false.

Returns :

• A promise that resolves a string containing channel ID or,
• A promise that resolves null

is_valid_to_get_channel_id(url)

Given a URL, returns a Boolean indicating whether or not it is valid URL to get channel id

Parameter :

• url : Any type

Returns :

• True if url is one of the valid format to get channel ID information
  • See get_channel_id() above for URL formats that are considered valid
• False if url is not one of the valid format

get_playlist_id(url)

Given a playlist URL, returns the playlist's ID

Parameter :

• url : A youtube account user created playlist URL. Supported url format example:
  • https://www.youtube.com/playlist?list=...
  • https://m.youtube.com/playlist?list=...
  • https://www.youtube.com/watch?v=naHNhDHK4VU&list=...
  • https://m.youtube.com/watch?v=naHNhDHK4VU&list=...

Returns :

• A string containing playlist ID, or
• null

get_playlist_videos(url, offline, print_error)

Given playlist URL, returns an ordered array of playlist video IDs

Parameters :

• url : A youtube account user created or custom playlist URL. Supported url format example:
  • https://www.youtube.com/playlist?list=...
  • https://m.youtube.com/playlist?list=...
  • https://www.youtube.com/watch?v=naHNhDHK4VU&list=...
  • https://m.youtube.com/watch?v=naHNhDHK4VU&list=...
  • https://www.youtube.com/embed/naHNhDHK4VU?playlist=...,...,...
• offline : An optional boolean argument to indicate whether or not to make HTTP request to get channel ID.
  • Default is false (makes HTTP request). Note that only URLs formatted as https://www.youtube.com/embed/naHNhDHK4VU?playlist=...,...,... are parsable offline
• print_error : An optional boolean argument to indicate whether or not to print any possible error message to console. Only useful for debugging. Default false.

Returns :

• A promise that resolves a non-empty array of ordered video IDs of the playlist
  • The maximum length of this array is currently 100
• If invalid, error, or not parsable, returns a promise that resolves null

get_channel_id_and_name(url)

Given a video/video shortcut/embed/channel/user url, makes a single HTTP request and returns an object containing keys channel_id and channel_name with string values. On error or invalid url, returns null.

NOTE: this function is comparatively more susceptible to break on changes.

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